Mariner 25hp <br />model 7025520 (Jap made) <br />Serial # 695-555723 <br />Mfg. date- 07/04/81<br /><br />Specifications; <br />Bore- 67mm(2.64 in.) Stroke- 61mm (2.40 in.) Displacement- 430cc (26.25 cu in.) <br />Operating RPM range- 4500- 5500 Spark plug gap- 0.5- 0.6mm (.019- .024 in.) <br />*This info came from my owners manual <br /><br />I am having trouble trying to time this engine. Any help would be very appreciated... It does not have points that can be adjusted, but has magneto ignition. I own a Clymer Mariner outboard shop manual, but it seems not to cover the Japanese made Mariner motors... I cant seem to rely on the information in the shop manual. I also need to know what timing mark to use.<br /><br />I have made a web page with info and pictures of motor, so you can see what it looks like without the cover on... To view use this link:<br /> http://www.webworksmarketinginc.com/Mariner25hp.htm
